Perhaps you should try some spelling variations:
wang xiaoping » wang xiaodong, deng xiaoping, wang xiaolin
xiaoping wang » xiaoyang tang
change coping » change scoping, change comparing, change becoming
change mowing » change making, change mapping, change working
zhong zhi » zhang zhi, zhong tai
wang dan » wang yan, wang ban, wang yidan
dan phan » van phan, dan pelan, dan pad
hong ghi » hong g, hong hai

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: wang xiaoping wang dan phan ((change coping) OR (change mowing)) ((hong ghi) or (zhong zhi)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang xiaoping wang dan phan ((change coping) OR (change mowing)) ((hong ghi) OR (zhong zhi)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang xiaoping wang dan phan ((change coping) OR (change mowing)) ((hong ghi) or (zhong zhi)) ;".
• Adding a wildcard symbol may retrieve word variants: wang xiaoping wang dan phan ((change coping) OR (change mowing)) ((hong ghi) or (zhong zhi)) ;*.